I'm giving this one a lot of consideration, as it includes a washer/dryer and kitchen. Looks like there's lots to do for kids, and also it's close to Sea World.
FWIW, I've almost given up on staying onsite unless there's some amazing deal to sway me in that direction. Having maid service and Disney transportation has just not been something that I've considered in the mix. I greatly enjoy having access to a nice resort and a large room. Having a kitchen and washer/dryer to use during my stay for a rate much less than Disney offers for their rooms is usually the deciding factor.
The only negative I can think of is paying for Disney parking, unless you're an AP holder.